Use of photoacoustic effect for the detection of phase transitions in liquid crystal mixtures

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Use of photoacoustic effect for the detection of phase transitions in liquid crystal mixtures

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dc.contributor.author V P N Nampoori
dc.contributor.author Radhakrishnan, P
dc.contributor.author Girijavallabhan, C P
dc.contributor.author Nibu, A George
dc.contributor.author George, A K
dc.date.accessioned 2010-07-14T10:36:08Z
dc.date.available 2010-07-14T10:36:08Z
dc.date.issued 2000-10-13
dc.identifier.citation International School of Photonics, Cochin University of Science and Technology en_US
dc.identifier.other J. Phys. D: Appl. Phys. 33 (2000) 3228–3232
dc.identifier.other PII: S0022-3727(00)15945-5
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/1839
dc.description.abstract We report on a laser induced photoacoustic study of the nematic-to-isotropic transition in certain commercial nematic liquid crystal mixtures, namely BL001, BL002, BL032 and BL035. A simple analysis of the experimental data using the Rosencwaig–Gersho theory shows that the heat capacities of all these compounds exhibit a sharp peak as the temperature of the sample is varied across the transition region. Also, substantial differences in the photoacoustic signal amplitudes in nematic and isotropic phases have been noticed for all the mixtures. The increased light scattering property of the nematic phase may be the reason for the enhanced photoacoustic signal amplitude in this phase. en_US
dc.language.iso en en_US
dc.publisher Journal of Physics D : Applied Physics en_US
dc.subject photoacoustic en_US
dc.subject phase transitions en_US
dc.subject liquid crystal mixtures en_US
dc.title Use of photoacoustic effect for the detection of phase transitions in liquid crystal mixtures en_US
dc.type Working Paper en_US


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